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參數(shù)資料
| 型號(hào)： | SM8580 |
| 廠商： | Seiko NPC Corporation |
| 元件分類： | 溫度/濕度傳感器 |
| 英文描述： | Real-time Clock IC with 4-bit Interface and Built-in Temperature Sensor |
| 中文描述： | 實(shí)時(shí)時(shí)鐘集成電路溫度傳感器與4位接口和內(nèi)置 |
| 文件頁(yè)數(shù)： | 15/23頁(yè) |
| 文件大?。?/td> | 179K |
| 代理商： | SM8580 |
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SM8580AM
NIPPON PRECISION CIRCUITS—15
Alarm Registers (Bank 1, Registers 0 to 8, E)
Alarm control register (register E)
I
AF bit (alarm flag)
The AF bit is set to 1 when an alarm event is
occurred, when the settings in the alarm set regis-
ters (bank 1, registers 0 to 8) match the settings in
the day, clock and calendar registers (bank 0, reg-
isters 0 to 8). The AF bit remains 1 until reset by
writing 0 to AF. A logic 1 cannot be written to AF.
I
AIE bit (alarm interrupt enable)
This bit enables the output on AIRQN when an
alarm interrupt is occurred. If the AIE is not set to
1, then no output occurs even if the AF bit is set to
1. The AIRQN output is high impedance when
AIE is set to 0.
Alarm set registers (registers 0 to 8)
I
These registers set the alarm time and date.
I
When the corresponding bank 0 registers match
these bank 1 registers, an alarm event occurs and
AIRQN goes LOW if AIE is set to 1.
I
An alarm can be set for date, day-of-week, hour,
minute, and second. Each of these have a corre-
sponding AE (alarm enable) bit which allows easy
combination to create alarm events every second,
every minute, hourly, daily, and weekly alarms.
I
Note that alarms cannot be set for multiple days
within the same week (such as an alarm on Mon-
days and Fridays only).
I
When an AE bit is set to 0, the relevant register
and corresponding bank 0 register are compared.
When an AE bit is set to 1, the data is disregarded
and all bits considered as “don’t care” bits.
Day-of-week alarm bits (register 6)
I
The day-of-week register contains values repre-
senting the day of the week as shown in the fol-
lowing table.
Bank
Address
Register
Bit 3
Bit 2
Bit 1
Bit 0
1
E
Alarm control
AF
AIE
Bank
Address
Register
Bit 3
Bit 2
Bit 1
Bit 0
1
0
Second registers
8
4
2
1
1
AE
40
20
10
2
Minute registers
8
4
2
1
3
AE
40
20
10
4
Hour registers
8
4
2
1
5
AE
*
20
10
6
Day of week register
AE
4
2
1
7
Date registers
8
4
2
1
8
AE
*
20
10
Bit 2
Bit 1
Bit 0
Weekday
0
0
0
Sunday
0
0
1
Monday
0
1
0
Tuesday
0
1
1
Wednesday
1
0
0
Thursday
1
0
1
Friday
1
1
0
Saturday
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| SM8580AM | 制造商:NPC 制造商全稱:Nippon Precision Circuits Inc 功能描述:Real-time Clock IC with 4-bit Interface and Built-in Temperature Sensor |
| SM8580AM_06 | 制造商:NPC 制造商全稱:Nippon Precision Circuits Inc 功能描述:Real-time Clock IC with 4-bit Interface and Built-in Temperature Sensor |
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